Lab 9 Electrical Fundamentals

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Sheridan College *

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CST8102

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Electrical Engineering

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Dec 6, 2023

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docx

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ENGI 12578: Electrical Fundamentals Lab #9: Capacitors in Series and Parallel Configurations 25 Points total Student Name : Sukhpreet Kaur Student Number: 991694859 Complete the experiment described on this lab and record your observations. The completed lab comprises your lab report. Important information about submitting your lab. Please submit this lab with your complete result by uploading it in the assignment section of Slate. Please submit using Microsoft Word format. Use the following naming format studentname_studentnumber_lab1.doc for your file name. (Note you will lose points if you do not follow the above naming convention) Reference my lecture notes for details. You can check your results with Multisim before handing it in. Objective This is a two part lab. Part one shows how to check if the capacitor is good with an ohm meter and part 2 demonstrates the charge and discharge of the capacitor. Reference my notes Lecture 9 and 10 pages 31 to 44 in Lecture 9 Capacitors on Slate. (Please read over them before starting the lab) Page | 1

Part 1 (Capacitors in Series) Parts and tools required  2 non polarized capacitors (disc) from your kit between capacitance of 0.01uF, 0.5uF.  Standard Lab equipment power supply and volt/ohm/current meter Procedure 1. Place your selected capacitors in table 1 below. (4 Points) Table 1 Capacitor Selected Value Measured Value C1 10 uf 9.84 uf C2 15 uf 14.82 uf 2. Using the capacitive meter measure each capacitor and place it table 1 above. 3. On your breadboard construct the following series circuit in Figure 1. Ensure the proper position of your capacitor. Figure 1 4. Using the capacitor meter measure the total capacitance of the circuit between Node A and Node B. Record the value in Table 2 on the next page under the calculations column . (4 Points) 5. Below calculate the total capacitance CT of the circuit in figure 1 and place it in Table 2 (5 Points) Table 2 Page | 2

Measured total capacitance Calculated total capacitance 5.92uf 6UF 6. Add a 10 Volt DC power source to the circuit as shown in Figure 2 below. Figure 2 7. With a voltmeter measure the voltage across each of the capacitors C1 and C2 and enter them in Table 3 below. (2 Points) Table 3 Capacitor VCx C1 2.24V C2 7.76 V 8. Apply Kirchhoff’s voltage law to capacitors connected in series. ( 1 Point) Vin = Vout Vin = 10V Vout= VC1+VC2 =2.24+7.76 = 10V 9. On your breadboard construct the parallel circuit in Figure 3 below. Figure 3 Page | 3

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10. Using the capacitor meter measure the total capacitance of the circuit between Node A and Node B. Record the value in Table 4 under the measured column . (4 Point) Table 4 Measured total capacitance 24.94uf 11.Add a 10 Volt DC power source to the circuit as shown in Figure 4 below. Figure 4 12.With a voltmeter measure the voltage across each of the capacitors C1 and C2 and enter them in Table 5 below . (4 Points) Table 5 Capacitor Measured Parallel VCx C1 10 V C2 10V 13. Apply Kirchhoff’s voltage law to capacitors connected in parallel . (1 Point) Ans = As we know voltage will be same in parallel capacitors which is equal to Vin = 10V Page | 4

Formulas for capacitors in Series and Parallel 1. Total Capacitors in Series CT = C 1 C 2 C 1 + C 2 CT= (10)(15)/10+15 =150/25 = 6 uF 2. Capacitors in parallel CT= C1+C2 CT= 10 +15 = 25 uF Page | 5